%I #11 Apr 15 2014 14:15:19
%S 4,6,8,12,18,38,80,252,774,3896,27336,392052,12756858,1092415586,
%T 472453446242,868902360858434,14376632914669134314,
%U 4036674523648432177160942,42789537408024230796663412027268,59409405891012099909331444455597205552902
%N a(n+1) = a(n) converted to base 6 from base 4 (written in base 10).
%H Vincenzo Librandi, <a href="/A023374/b023374.txt">Table of n, a(n) for n = 1..32</a>
%t NestList[FromDigits[IntegerDigits[#,4],6]&,4,20] (* _Harvey P. Dale_, Apr 14 2014 *)
%K nonn
%O 1,1
%A _David W. Wilson_
%E a(19) from _Vincenzo Librandi_, Apr 15 2014
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